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challenging medium

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ZoomZoom, tuples analysis is the name I give to a group of techniques I describe on my website. Some of these techniques include naked and hidden pairs, naked and hidden triples and so on. Perhaps you have heard those terms before.

Difficulty 35.

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Ah I see. thank you for the explanation, Drwho. Yes I have heard of hidden double, triple pairs etc terms before.I must read your websites for more info to see if I can improve.